Merge PDF
Combine multiple PDF files into one document.
Upload files
Choose a file and hit the action button to process it immediately.
Combine several PDFs into one organized file
PDF merging joins complete documents in the order you select them. A single combined file is easier to send, archive, print, and review than a collection of separate attachments.
How to use Merge PDF
- Select two or more PDF files.
- Choose them in the sequence you want to read them.
- Select Merge PDFs and download the combined document.
Common reasons to use it
- Combining monthly reports or invoices
- Joining a cover page with supporting documents
- Building one portfolio from several files
Before you start
Rename or arrange source files so their intended order is obvious before selecting them. Check that each file opens and that none requires a password. Documents with different portrait, landscape, or paper sizes can be merged, but the variation remains in the final PDF and may look uneven in continuous view or when printed.
Quality and result checks
Merging preserves full pages rather than blending their layouts. Duplicate page numbers, conflicting bookmarks, forms with identical field names, and digital signatures deserve special attention. A signature can become invalid when a signed document is modified or combined. Review the boundary between every source file and confirm that the final page count equals the total you expected.
Frequently asked questions
How many PDFs should I upload?
The tool needs at least two. Practical limits depend on the size of the files and your browser or account limits.
Can PDFs with different page sizes be merged?
Yes, although the output will retain those differing dimensions rather than resizing every page.
Will digital signatures remain valid?
Combining or otherwise modifying a signed PDF can invalidate its signature. Verify signatures before relying on the merged copy.